Electrodynamical synchronization of AM Herculis-type stars

Details Electrodynamical synchronization of AM Herculis-type stars Electrodynamical synchronization of AM Herculis-type stars

Feb 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986ap%26ss.119...85k&link_type=abstract

(IAU, Asian-Pacific Regional Meeting, 3rd, Kyoto, Japan, Sept. 30-Oct. 5, 1984) Astrophysics and Space Science (ISSN 0004-640X),

Astronomy and Astrophysics

Astrophysics

4

Binary Stars, Electrodynamics, Red Dwarf Stars, Stellar Mass Accretion, Stellar Rotation, White Dwarf Stars, Earth Magnetosphere, Electrical Resistance

Scientific paper

A new mechanism is proposed for the explanation of synchronous rotations in AM Herculis-type binaries. In contrast to the resistive mechanism of Joss et al. (1979), the model proposed here predicts that an asynchronous rotation, if it is present, damps exponentially and the damping time is inversely proportional to the electrical conductivity. It is shown by using the parameters which fit for AM Herculis that a typical damping time is very short compared with the lifetime of the system.

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